HairStrandsCore/Public/GroomComponent.h
virtual void CollectPSOPrecacheData ( const [FPSOPrecacheParams](API\Runtime\Engine\FPSOPrecacheParams) & BasePrecachePSOParams, [FComponentPSOPrecacheParamsList](API\Runtime\Engine\Components\UPrimitiveComponent\FComponentPSOPrecacheParamsList) & OutParams )